Methods, devices, and machines for determining the location of mobile devices and providing location information to mobile devices, and non-volatile storage media readable by a processor.

Abstract

This invention relates to methods, mobile devices and machines for determining the location of mobile devices and providing location information to mobile devices, and invariant storage media readable by a processor. The techniques provided herein are for activating the positioning reference signal (PRS) on demand with user equipment (UE). An example method for determining the location of a mobile device includes sending a request for a downlink location reference signal to the network server, which includes location reference signal configuration information; receiving support data based on the location reference signal configuration information; measuring one or more downlink location reference signals based at least in part on the location reference signal configuration information; and determining the location of the mobile device based at least in part on the measurements obtained from one or more downlink location reference signals and support data.